Apparatus and method for creating video images including soft-edge processing
US5408593A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Oct 18, 1993 |
| Grant date | Apr 18, 1995 |
| Priority date | — |
| Expiry date | Oct 18, 2013 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F3/04845
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
Soft-edge processing of a video color image is effected in accordance with a stylus nib pressure. Initially, a display circle unit is determined having center coordinance corresponding to display coordinance of a stylus and having a radius corresponding to a nib pressure of the nib stylus. A display region is set encompassing the display circle unit, the display region having a plurality of pixels. A distance from each pixel located outside the circle unit within the display region to the circle unit is determined. This distance is then used as the basis for determining a Z value of the pixel which is indicative of the relative illumination of the pixel to effect soft-edge processing of the image.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.